using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class MasterPage_MasterPage : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            DateTime data = DateTime.Now;

            if (data.Second % 2 > 0)
                dTopo.InnerHtml="<table border='0' cellpadding='0' cellspacing='0' background='../images/topo.jpg' width='100%' style='height: 153px'>";
            else
                dTopo.InnerHtml = "<table border='0' cellpadding='0' cellspacing='0' background='../images/topo2.jpg' width='100%' style='height: 153px'>";
        }
    }
}

